qcacld-3.0: Add support for gpio based strobe to capture tsf

Add configuration for gpio pin used to send strobe to wlan hw.

The host driver will latch the current time and toggle the gpio
to generate a strobe to wlan hw.

The tsf will be latched on detecting the strobe and it will be
made available in a register for sw access.
The wlan fw will read this tsf and report it to driver using tsf event.

Change-Id: I4365d97d22836ddbbd2bf9913d4f723e5a870369
CRs-Fixed: 2495152

fw_offload/dispatcher/inc/cfg_fwol_generic.h

@@ -462,6 +462,40 @@
 #define __CFG_SET_TSF_IRQ_HOST_GPIO_PIN
 #endif
 
+#ifdef WLAN_FEATURE_TSF_PLUS_EXT_GPIO_SYNC
+/*
+ * <ini>
+ * gtsf_sync_host_gpio_pin
+ * @Min: 0
+ * @Max: 254
+ * @Default: 255
+ *
+ * TSF sync GPIO pin of host platform
+ *
+ * The driver will use this gpio on host platform
+ * to drive the TSF sync pin on wlan chip.
+ * Toggling this gpio  will generate a strobe to fw
+ * for latching TSF.
+ *
+ * Related: None
+ *
+ * Usage: External
+ *
+ * </ini>
+ */
+#define CFG_SET_TSF_SYNC_HOST_GPIO_PIN CFG_INI_UINT( \
+		"gtsf_sync_host_gpio_pin", \
+		0, \
+		254, \
+		255, \
+		CFG_VALUE_OR_DEFAULT, \
+		"TSF sync GPIO pin of host platform")
+
+#define __CFG_SET_TSF_SYNC_HOST_GPIO_PIN CFG(CFG_SET_TSF_SYNC_HOST_GPIO_PIN)
+#else
+#define __CFG_SET_TSF_SYNC_HOST_GPIO_PIN
+#endif
+
 #if defined(WLAN_FEATURE_TSF) && defined(WLAN_FEATURE_TSF_PLUS)
 /* <ini>
  * gtsf_ptp_options: TSF Plus feature options
@@ -687,6 +721,7 @@
 	CFG(CFG_RA_FILTER_ENABLE) \
 	CFG(CFG_SET_TSF_GPIO_PIN) \
 	__CFG_SET_TSF_IRQ_HOST_GPIO_PIN \
+	__CFG_SET_TSF_SYNC_HOST_GPIO_PIN \
 	__CFG_SET_TSF_PTP_OPT \
 	CFG(CFG_LPRX) \
 	__CFG_IS_SAE_ENABLED \